In order to calculate the velocity, we can use the formula below:
[tex]\text{velocity}=\frac{\text{distance}}{\text{time}}[/tex]If the total distance is 150 km and the amount of time is 1.75 hours, we have:
[tex]\begin{gathered} \text{velocity}=\frac{150}{1.75} \\ \text{velocity}=85.71\text{ km/hr} \end{gathered}[/tex]Therefore the velocity is 85.71 km/hr.